PAHs in soil and surface marine sediment near Jubany station (Antarctica)

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: PAHs in soil and surface marine sediment near Jubany station (Antarctica)
Description:
Abstract:
This study reports the concentration of PAHs in sediment samples collected in two consecutive summer Antarctic expeditions at Potter Cove and on the peninsula, in the vicinity of Jubany Station (South Shetland Islands). Two- and 3-ring PAHs (methylnaphthalene, fluorene, phenanthrene and anthracene) were the main compounds found in most sites, although total PAH concentrations showed relatively low levels compared with other humanimpacted areas in Antarctica. Pattern distribution of PAHs observed in samples suggested that low-temperature combustion processes such as diesel motor combustion and open-field garbage burning are the main sources of these compounds. The sediment PAH contents were assessed also in relation to the distribution in soils. The highest level in soil was detected in the upper layer of permafrost followed by a sharp decrease in depth, showing this layer is acting as a barrier for downward PAH migration. The authors observed a significant decrease in the soil content in summer 2005 (range 12 ±1 - 153±22 ng g-1) compared to summer 2004 35 (range 162±15 - 1182±113 ng g-1) contemporaneously was observed the accumulation in the marine sediment of the area. The PAH concentrations in surface sediment collected nearby the station increased drastically in 2005 (range: 36±3 - 1908±114 ng g-1) compared to 2004 (range: 28±3 - 312±24 ng g-1). Precipitation regime and water run off suggest that an important wash out of soil-PAHs occurred during the interval time between samplings. Results showed that the present PAH contamination level of Jubany Station was relatively low compared to other reported cases in Antarctica but also suggests that an increase in rain and in thawing processes caused by the global warming could result in an important soil associated PAH mobilization with unpredictable consequences.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Curtosi, A., Pelletier, E., Vodopivez, C. L., and Mac Cormack, W. P., 2007: Polycyclic aromatic hydrocarbons in soil and surface marine sediment near Jubany Station (Antarctica). Role of permafrost as a low-permeability barrier. Science of the Total Environment, 383, 193-204. Mac Cormack W.P. and Fraile E.R.,1997. Characterization of a hydrocarbon degrading psychrotrophic Antarctic bacterium. Antarct Sci, 9, 150–157.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20040101
Ending_Date: 20051230
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: Not Available
East_Bounding_Coordinate: Not Available
North_Bounding_Coordinate: Not Available
South_Bounding_Coordinate: Not Available
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT COMPOSITION
Theme_Keyword: GC-MS > GAS CHROMATOGRAPH/MASS SPECTROMETRY
Theme_Keyword: Pah Distribution
Theme_Keyword: Antarctics Soil
Theme_Keyword: Marine Sediment
Theme_Keyword: King George Island
Theme_Keyword: ENVIRONMENT
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > SOUTHERN OCEAN > SOUTH SHETLAND ISLANDS
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: UBA > University of Buenos Aires
Contact_Person: WALTER PATRICIO MAC CORMACK
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Cerrito 1248
City: Buenos Aires
Country: Argentina
Contact_Voice_Telephone: +54 11 4964 8269
Contact_Facsimile_Telephone: +54 11 4508 3645
Contact_Electronic_Mail_Address: wmac@ffyb.uba.ar
Resource_Description: ECA005
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.uba.ar/homepage.php
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20100524
Metadata_Review_Date: 20100618
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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